TPS7A19 40-V 450-mA low-IQ low-dropout (LDO) linear regulator with power good |

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40-V 450-mA low-IQ low-dropout (LDO) linear regulator with power good


Recommended alternative parts

  • TPS7A90  -  TPS7A90 is 500mA, low noise (4.7uVrms) LDO in a small package (2.5 mm x 2.5mm)


The TPS7A19 is a low-dropout linear regulator (LDO) with a wide input voltage (VIN) range up to 40 V, capable of sourcing high output current (IOUT) up to 450 mA. This voltage regulator is ideal for generating a low-voltage supply from wide input-voltage rails. Not only does the TPS7A19 supply a well-regulated voltage rail, but the device also withstands and maintains regulation during voltage transients by acting as a simple surge protection circuit.

The TPS7A19 consumes only 15 µA of quiescent current (IQ) at light loads, thereby lowering the power consumption for always-on or battery-powered applications.

The TPS7A19 features integrated thermal shutdown and overcurrent protection. The TPS7A19 also offers a power good output (PG) with a programmable delay that indicates when the output voltage is in regulation. This feature is useful for power-rail sequencing functions.

This LDO is available in a small, 3-mm × 3-mm, thermally-enhanced, 8-pin SON package.


  • Wide Input Voltage Range: 4 V to 40 V
  • Adjustable Output Voltage: 1.5 V to 18 V
  • Output Current: 450 mA
  • Low Quiescent Current (IQ): 15 µA
  • Low Dropout Voltage: 450 mV (max) at 400 mA
  • Power Good with Programmable Delay
  • Thermal Shutdown and Overcurrent Protection
  • Stable with Ceramic Output Capacitors:
    • 10 µF to 500 µF for VOUT ≥ 2.5 V
    • 22 µF to 500 µF for VOUT < 2.5 V
  • Operating Temperature: –40°C to +125°C
  • Package: 3-mm × 3-mm SON-8

WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS7A19

  Min   Max Range
Vin  V 4.0 to 40.0V
Vout  V 1.5 to 18V
Iout  A ≤ 0.45A
Ambient Temp  °C -40 to 125°C


Compare all products in Linear regulators (LDO) Email Download to Excel
Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7A19 Order now Adjustable Output     0.45     40     4     18     1.5       SON | 8     Enable
Power Good    
1     -40 to 125     48       0.54 | 1ku     Catalog     45     2     240     0.015     8SON: 9 mm2: 3 x 3 (SON | 8)    
TPS7A16 Order now Adjustable Output
Fixed Output    
0.1     60     3     18.5     1.2     3.3
SON | 8    
Power Good    
1     -40 to 125     45     215     1.05 | 1ku     Catalog     26     2     60     0.005     8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)
8SON: 9 mm2: 3 x 3 (SON | 8)